Accreditation vs Ranking

I just found that Frankfurt School(MBA FT) is now a triple accreditation institute whereas WHU(MBA FT) is still not, can anyone please tell me would this affect their relative ranking. Additionally, does accreditation has any dependency on MBA ranking?

Hi All,

I just found that Frankfurt School(MBA FT) is now a triple accreditation institute whereas WHU(MBA FT) is still not, can anyone please tell me would this affect their relative ranking. Additionally, does accreditation has any dependency on MBA ranking?